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Question

Solve for :

     

The lower (or only) solution for this equation is    

The higher solution for this equation is    

The solution     is an extraneous solution (if any).

(Fill in each with an integer or a rational number or the word "none" or "n/a" with no capital letters or quotation marks.)

Answer 1

(√(x^2-1))^(1/3)=2

cube both sides of the equation (raise each side to the third power)

x^2-1=8

x^2=9

x=±3

x=3 and x=-3 are the solutions